Finding the Fourth Proportional to 75,678.50, 113,447.18 and 25,724.46
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Solution
The fourth proportional to 75,678.50, 113,447.18 and 25,724.46 is: 38,562.70
Step by Step Solution
- Step 1: Write the proportion equation
75,678.50 : 113,447.18 = 25,724.46 : x - Step 2: Convert to fraction form
75,678.50/113,447.18 = 25,724.46/x - Step 3: Cross multiply
75,678.50x = 113,447.18 × 25,724.46 - Step 4: Simplify right side
75,678.50x = 2,918,367,444.02 - Step 5: Solve for x
x = 2,918,367,444.02/75,678.50 - Step 6: Final answer
x = 38,562.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.